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OVERVIEW
Measure a wide variety of materials from -20°C to 1000°C in one device
ExTemp intrinsically safe non-contact infrared temperature sensors measure the temperature of an area of the surface of a solid or liquid, and transmit this as a two-wire, linear 4-20 mA output.
Temperature ranges from -20°C to 1000°C are available. All models have an adjustable emissivity setting, and may be used to measure a wide variety of target materials, including food, paper, textiles, plastics, leather, tobacco, pharmaceuticals, chemicals, rubber, coal, asphalt and paint.
A choice of precision optics is available to measure small or large targets at short or long distances.
The optional LCT Loop Configuration Tools (USB and RS-485 adapters) and free software allow the ExTemp to be connected to a PC, PLC or SCADA system for temperature indication, sensor configuration and data acquisition.
These sensors are designed primarily for use in hazardous areas in conjunction with a suitable safety barrier or isolator. All models have been certified Intrinsically Safe for use in gas and dust hazardous areas by Certification Management Ltd. They comply with the European ATEX Directive 2014/34/EU and are covered by certificates for IECEx (international) and UKCA (United Kingdom). The ExTemp Series is also approved for use in Japan (JNIOSHTR-46-1:2020 (General requirements); JNIOSH-TR-46-6:2015 (Intrinsic Safety “i”)).
Features
- Suitable for hazardous areas, Zone 0, 1 and 2 (gas), and Zone 20, 21 and 22 (dust), with a suitable Intrinsically Safe isolator
- Temperature range: -20°C to 1000°C
- Two wire, 4-20 mA output
- Rescalable output and adjustable emissivity setting via optional USB and RS-485 adapters
- Fast response time and high stability
- Stainless steel 316 housing – ideal for offshore applications
- IP65 sealed
- Supplied with up to 25 m cable
Please refer to product images or data sheet for field of view images
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APPLICATIONS
The ExTemp’s IIC T4, IIIC T135°C, ATEX and IECEx rating makes it suitable for many applications in hazardous areas, including:
Petrochemical – condition monitoring
Bearing, gearbox and motor housing surface temperatures in refineries and chemical plants can be monitored without contact, eliminating the need to replace contact probes that are easily damaged by vibration.
Petrochemical – liquid storage and processing
The sensor can be positioned in a Zone 0 environment such as the top of a tank of hazardous liquid or reactor, to measure the surface temperature of the liquid.
Paper
Dust in pulp, paper and packaging plants can create a fire and explosion hazard. The ExTemp intrinsically safe pyrometer can be used for paper web temperature measurement and condition monitoring in ATEX and IECEx classified hazardous areas.
Coal conveyors
The ExTemp’s fast 240 ms response time makes it ideal for measuring the surface temperature of coal on conveyors, as well as other bulk materials where there is an explosive dust hazard.
Gas cylinder filling
The surface temperature of cylinders of explosive gases is monitored with the ExTemp as they are filled. The Group IIC, T4 classification makes it suitable for almost all gases including propane, butane, hydrogen and acetylene. The temperature of each cylinder is measured on the filling rig to help detect fault conditions in filling, to calculate the final filled volume (in conjunction with the pressure), to ensure the volume is repeatable, and to improve the filling rate.
Automotive painting
Solvents in automotive painting can create a gas explosion risk. The intrinsically safe ExTemp may be used to monitor the temperature of containers and vessels, the surface temperature of liquids and powders, and the temperature of painted surfaces.
Offshore
The ExTemp’s 316 stainless steel housing and intrinsically safe certification makes it well-suited for use on offshore platforms. As well as measuring the temperature of surfaces on the rig, it can be used to measure the temperature of the sea surface.
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SPECIFICATIONS
Temperature Range See table of Model Numbers Maximum Temperature Span 1000°C Minimum Temperature Span 100°C Output 4 to 20 mA Field of View See table of Model Numbers Accuracy ± 1°C or 1%, whichever is greater Repeatability ± 0.5°C or 0.5%, whichever is greater Emissivity Setting Range 0.20 to 1.00 (pre-set to 0.95) Emissivity Setting Method Configurable via optional adapters Response Time 240 ms (90% response) Spectral Range 8 to 14 μm Supply Voltage 12 to 24 V DC ± 5% Maximum Current Draw 25 mA Maximum Loop Impedance See Application Guide (available separately) Mechanical
Construction Stainless Steel 316 Major Dimensions Ø 20 x length 150 mm (see Dimensions) Mounting M20 x 1.5 mm thread, length 46 mm, supplied with two mounting nuts Cable Length 5 m, 10 m or 25 m as standard (contact Calex for information on extending the cable) Weight with 5 m Cable 475 g Environmental
Environmental Rating IP65 (NEMA 4) Ambient Temperature Range 0°C to 70°C (Operating range) Ambient Pressure Range 80 kPa (0.8 bar) to 110 kPa (1.1 bar) Relative Humidity Max. 95% non-condensing CE Marked Yes RoHS Compliant Yes Hazardous Area Classification
The ExTemp is ATEX, IECEx, TIIS and UKCA Ex (UKEX) certified. ATEX Classification Ex II 1GD IECEx Classification (Gas) Ex ia IIC T4 Ga IECEx Classification (Dust) Ex ia IIIC T135°C IP65 Da Ambient Temperature Rating -20°C ≤ Ta ≤ 70°C Maximum DC Input Voltage Ui = 28 V Maximum Input Current Ii = 93 mA Maximum Input Power Pi = 650 mW Maximum Internal Capacitance Ci = 8 nF Maximum Internal Inductance Li = 0 mH ATEX Certificate Number CML 14ATEX2079 IECEx Certificate Number IECEx CML 14.0032 JapanEx Certificate Number CML 23JPN2141 UKCA Certificate Number CML 21UKEX2001
Calex ExTemp – Intrinsically safe infrared temperature sensor
ExTemp intrinsically safe non-contact infrared temperature sensors measure the temperature of an area of the surface of a solid or liquid, and transmit this as a two-wire, linear 4-20 mA output. Its ATEX and IECEx rating makes it suitable for many applications in hazardous areas.
